The entire first floor on the Southwest side of a commercial building was blown out after a natural gas explosion early Tuesday morning, March 3, 2015 at the 10100 block on Grinnell Avenue in Detroit. (Elaine Cromie | MLive Detroit)

The entire first floor on the Southwest side of a commercial building was blown out after a natural gas explosion early Tuesday morning, March 3, 2015 at the 10100 block on Grinnell Avenue in Detroit. (Elaine Cromie | MLive Detroit)

The entire first floor on the Southwest side of a commercial building was blown out after a natural gas explosion early Tuesday morning, March 3, 2015 at the 10100 block on Grinnell Avenue in Detroit. (Elaine Cromie | MLive Detroit)

The entire first floor on the Southwest side of a commercial building was blown out after a natural gas explosion early Tuesday morning, March 3, 2015 at the 10100 block on Grinnell Avenue in Detroit. (Elaine Cromie | MLive Detroit)

The entire first floor on the Southwest side of a commercial building was blown out after a natural gas explosion early Tuesday morning, March 3, 2015 at the 10100 block on Grinnell Avenue in Detroit. (Elaine Cromie | MLive Detroit)

The entire first floor on the Southwest side of a commercial building was blown out after a natural gas explosion early Tuesday morning, March 3, 2015 at the 10100 block on Grinnell Avenue in Detroit. (Elaine Cromie | MLive Detroit)

The entire first floor on the Southwest side of a commercial building was blown out after a natural gas explosion early Tuesday morning, March 3, 2015 at the 10100 block on Grinnell Avenue in Detroit. (Elaine Cromie | MLive Detroit)

The entire first floor on the Southwest side of a commercial building was blown out after a natural gas explosion early Tuesday morning, March 3, 2015 at the 10100 block on Grinnell Avenue in Detroit. (Elaine Cromie | MLive Detroit)

The entire first floor on the Southwest side of the building was blown out after a natural gas explosion early Tuesday morning, March 3, 2015 at the 10100 block on Grinnell Avenue in Detroit. (Elaine Cromie | MLive Detroit)

The entire first floor on the Southwest side of a commercial building was blown out after a natural gas explosion early Tuesday morning, March 3, 2015 at the 10100 block on Grinnell Avenue in Detroit. (Elaine Cromie | MLive Detroit)

A firefighter carries a hose after extinguishing a fire at a commercial building caused by a natural gas explosion early morning on Tuesday, March 3, 2015 at the 10100 block on Grinnell Avenue in Detroit. (Elaine Cromie | MLive Detroit)